Intel Core M-5Y51 vs AMD Ryzen 7 7840H

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CPU comparison with benchmarks


Intel Core M-5Y51 CPU1 vs CPU2 AMD Ryzen 7 7840H
Intel Core M-5Y51 AMD Ryzen 7 7840H

CPU comparison

In this CPU comparison, we compare the Intel Core M-5Y51 and the AMD Ryzen 7 7840H and use benchmarks to check which processor is faster.

We compare the Intel Core M-5Y51 2 core processor released in Q4/2014 with the AMD Ryzen 7 7840H which has 8 CPU cores and was introduced in Q1/2023.
Intel Core M (16) Family AMD Ryzen 7 (70)
Intel Core M 5 (7) CPU group AMD Ryzen 7040 (21)
5 Generation 6
Broadwell Y Architecture Phoenix (Zen 4)
Mobile Segment Mobile
-- Predecessor --
-- Successor --

CPU Cores and Base Frequency

The Intel Core M-5Y51 is a 2 core processor with a clock frequency of 1.10 GHz (2.60 GHz). The processor can compute 4 threads at the same time. The AMD Ryzen 7 7840H clocks with 3.80 GHz (5.10 GHz), has 8 CPU cores and can calculate 16 threads in parallel.

Intel Core M-5Y51 Characteristic AMD Ryzen 7 7840H
2 Cores 8
4 Threads 16
normal Core architecture normal
Yes Hyperthreading Yes
No Overclocking ? No
1.10 GHz Frequency 3.80 GHz
2.60 GHz Turbo Frequency (1 Core) 5.10 GHz
2.00 GHz Turbo Frequency (All Cores) 4.25 GHz

NPU AI performance

The performance values of the processor's AI unit. The isolated NPU performance is specified here, the total AI performance (NPU+CPU+iGPU) can be higher. Processors with support for artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors.

Intel Core M-5Y51 Characteristic AMD Ryzen 7 7840H
-- AI hardware AMD Ryzen™ AI
-- AI specifications AMD dedicated AI XDNA Technology
-- NPU + CPU + iGPU --

Integrated graphics (iGPU)

Graphics (iGPU) integrated into the processor not only enable image output without having to rely on a dedicated graphics solution, but can also efficiently accelerate video playback.

Intel HD Graphics 5300 GPU AMD Radeon 780M
0.30 GHz GPU frequency 0.80 GHz
0.90 GHz GPU (Turbo) 2.70 GHz
8 GPU Generation 3
14 nm Technology 4 nm
3 Max. displays 4
24 Compute units 12
192 Shader 768
No Hardware Raytracing Yes
No Frame Generation AMD FSR
16 GB Max. GPU Memory 32 GB
11.2 DirectX Version 12

Hardware codec support

A photo or video codec that is accelerated in hardware can greatly accelerate the working speed of a processor and extend the battery life of notebooks or smartphones when playing videos.

Intel HD Graphics 5300 GPU AMD Radeon 780M
Decode Codec h265 / HEVC (8 bit) Decode / Encode
Decode Codec h265 / HEVC (10 bit) Decode / Encode
Decode / Encode Codec h264 Decode / Encode
Decode Codec VP9 Decode
Decode Codec VP8 Decode
No Codec AV1 Decode / Encode
Decode / Encode Codec AVC Decode
Decode Codec VC-1 Decode
Decode / Encode Codec JPEG Decode / Encode

Memory & PCIe

Up to 16 GB of memory in a maximum of 2 memory channels is supported by the Intel Core M-5Y51, while the AMD Ryzen 7 7840H supports a maximum of 256 GB of memory with a maximum memory bandwidth of 120.0 GB/s enabled.

Intel Core M-5Y51 Characteristic AMD Ryzen 7 7840H
DDR3L-1600 Memory DDR5-4800, DDR5-5600, LPDDR5-6400, LPDDR5X-7500
16 GB Max. Memory 256 GB
2 (Dual Channel) Memory channels 2 (Dual Channel)
25.6 GB/s Max. Bandwidth 120.0 GB/s
No ECC Yes
-- L2 Cache 8.00 MB
4.00 MB L3 Cache 16.00 MB
2.0 PCIe version 4.0
12 PCIe lanes 20
6.0 GB/s PCIe Bandwidth 39.4 GB/s

Thermal Management

The Intel Core M-5Y51 has a TDP of 4.5 W. The TDP of the AMD Ryzen 7 7840H is 54 W. System integrators use the TDP of the processor as a guide when dimensioning the cooling solution.

Intel Core M-5Y51 Characteristic AMD Ryzen 7 7840H
4.5 W TDP (PL1 / PBP) 54 W
-- TDP (PL2) --
-- TDP up 60 W
-- TDP down 35 W
-- Tjunction max. 100 °C

Technical details

The Intel Core M-5Y51 has 4.00 MB cache and is manufactured in 14 nm. The cache of AMD Ryzen 7 7840H is at 24.00 MB. The processor is manufactured in 4 nm.

Intel Core M-5Y51 Characteristic AMD Ryzen 7 7840H
14 nm Technology 4 nm
Monolithic Chip design Monolithic
x86-64 (64 bit) Instruction set (ISA) x86-64 (64 bit)
SSE4.1, SSE4.2, AVX2 ISA extensions SSE4a, SSE4.1, SSE4.2,FMA3, AVX2, AVX512
BGA 1234 Socket FP8
VT-x, VT-x EPT, VT-d Virtualization AMD-V, SVM
Yes AES-NI Yes
Operating systems Windows 10, Windows 11, Linux
Q4/2014 Release date Q1/2023
-- Release price --
show more data show more data


Rate these processors

Here you can rate the Intel Core M-5Y51 to help other visitors make their purchasing decisions. The average rating is 0 stars (0 ratings). Rate now:
Here you can rate the AMD Ryzen 7 7840H to help other visitors make their purchasing decisions. The average rating is 4.6 stars (31 ratings). Rate now:


Average performance in benchmarks

⌀ Single core performance in 2 CPU benchmarks
Intel Core M-5Y51 (34%)
AMD Ryzen 7 7840H (100%)
⌀ Multi core performance in 3 CPU benchmarks
Intel Core M-5Y51 (10%)
AMD Ryzen 7 7840H (100%)

Geekbench 5, 64bit (Single-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core M-5Y51 Intel Core M-5Y51
2C 4T @ 2.60 GHz
669 (36%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 5.10 GHz
1857 (100%)

Geekbench 5, 64bit (Multi-Core)

Geekbench 5 is a cross plattform benchmark that heavily uses the systems memory. A fast memory will push the result a lot. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core M-5Y51 Intel Core M-5Y51
2C 4T @ 2.00 GHz
1272 (11%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 4.25 GHz
11334 (100%)

Geekbench 6 (Single-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The single-core benchmark only evaluates the performance of the fastest CPU core, the number of CPU cores in a processor is irrelevant here.
Intel Core M-5Y51 Intel Core M-5Y51
2C 4T @ 2.60 GHz
782 (32%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 5.10 GHz
2456 (100%)

Geekbench 6 (Multi-Core)

Geekbench 6 is a benchmark for modern computers, notebooks and smartphones. What is new is an optimized utilization of newer CPU architectures, e.g. based on the big.LITTLE concept and combining CPU cores of different sizes. The multi-core benchmark evaluates the performance of all of the processor's CPU cores. Virtual thread improvements such as AMD SMT or Intel's Hyper-Threading have a positive impact on the benchmark result.
Intel Core M-5Y51 Intel Core M-5Y51
2C 4T @ 2.00 GHz
1427 (12%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 4.25 GHz
12135 (100%)

iGPU - FP32 Performance (Single-precision GFLOPS)

The theoretical computing performance of the internal graphics unit of the processor with simple accuracy (32 bit) in GFLOPS. GFLOPS indicates how many billion floating point operations the iGPU can perform per second.
Intel Core M-5Y51 Intel Core M-5Y51
Intel HD Graphics 5300 @ 0.90 GHz
346 (8%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
AMD Radeon 780M @ 2.70 GHz
4201 (100%)

Estimated results for PassMark CPU Mark

Some of the CPUs listed below have been benchmarked by CPU-monkey. However the majority of CPUs have not been tested and the results have been estimated by a CPU-monkey’s secret proprietary formula. As such they do not accurately reflect the actual Passmark CPU mark values and are not endorsed by PassMark Software Pty Ltd.
Intel Core M-5Y51 Intel Core M-5Y51
2C 4T @ 2.00 GHz
2161 (8%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 4.25 GHz
28412 (100%)

Cinebench R23 (Single-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core M-5Y51 Intel Core M-5Y51
2C 4T @ 2.60 GHz
0 (0%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 5.10 GHz
1757 (100%)

Cinebench R23 (Multi-Core)

Cinebench R23 is the successor of Cinebench R20 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core M-5Y51 Intel Core M-5Y51
2C 4T @ 2.00 GHz
0 (0%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 4.25 GHz
15930 (100%)

CPU-Z Benchmark 17 (Single-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core M-5Y51 Intel Core M-5Y51
2C 4T @ 2.60 GHz
0 (0%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 5.10 GHz
624 (100%)

CPU-Z Benchmark 17 (Multi-Core)

The CPU-Z benchmark measures a processor's performance by measuring the time it takes the system to complete all benchmark calculations. The faster the benchmark is completed, the higher the score.
Intel Core M-5Y51 Intel Core M-5Y51
2C 4T @ 1.10 GHz
0 (0%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 3.80 GHz
6744 (100%)

Cinebench R15 (Single-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The single-core test only uses one CPU core, the amount of cores or hyperthreading ability doesn't count.
Intel Core M-5Y51 Intel Core M-5Y51
2C 4T @ 2.60 GHz
107 (100%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 5.10 GHz
0 (0%)

Cinebench R15 (Multi-Core)

Cinebench R15 is the successor of Cinebench 11.5 and is also based on the Cinema 4 Suite. Cinema 4 is a worldwide used software to create 3D forms. The multi-core test involves all CPU cores and taks a big advantage of hyperthreading.
Intel Core M-5Y51 Intel Core M-5Y51
2C 4T @ 2.00 GHz
208 (100%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 4.25 GHz
0 (0%)

AI performance (NPU)

The performance values of the processor's AI unit. The isolated NPU performance is given here, the total AI performance (NPU+CPU+iGPU) can be higher.

Processors with the support of artificial intelligence (AI) and machine learning (ML) can process many calculations, especially audio, image and video processing, much faster than classic processors. The performance is given in the number (trillions) of arithmetic operations per second (TOPS).
Intel Core M-5Y51 Intel Core M-5Y51
2C 4T @ 1.10 GHz
0 (0%)
AMD Ryzen 7 7840H AMD Ryzen 7 7840H
8C 16T @ 3.80 GHz
10 (100%)

Devices using this processor

Intel Core M-5Y51 AMD Ryzen 7 7840H
Unknown Unknown

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